问题
选择题
The physics teacher told the students to observe carefully what would happen when a (n) _____ acted on the object.
A.force
B.energy
C.power
D.strength
答案
答案:A
The physics teacher told the students to observe carefully what would happen when a (n) _____ acted on the object.
A.force
B.energy
C.power
D.strength
答案:A